buildingSMART / buildingSMART/IFC4.x-development
Proposal to describe how CostQuantities cannot be used for SCHEDULEOFRATES
Open
allocated-cost
ifc-update-out
proposal
- Dominant language
- Python
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Description
The current description for CostQuantities of an IfcCostItem is:
> Component quantities of the same type for which the total quantity for the cost item is calculated as the sum.
However, I believe that if the IfcCostSchedule is a SCHEDULEOFRATES, then CostQuantities do not have meaning. Instead, "unitised quantities" are provided using `UnitBasis` of `CostValue`, it seems.
Proposed new description:
> Component quantities of the same type for which the total quantity for the cost item is calculated as the sum. **If the cost item is part of a schedule of rates, the quantity must be omitted.**
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